/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.event;

import com.je.bpm.core.model.FlowElement;
import com.je.bpm.core.model.process.SubProcess;
import com.je.bpm.engine.ActivitiException;
import com.je.bpm.engine.delegate.event.ActivitiEventType;
import com.je.bpm.engine.delegate.event.impl.ActivitiEventBuilder;
import com.je.bpm.engine.impl.bpmn.helper.ScopeUtil;
import com.je.bpm.engine.impl.context.Context;
import com.je.bpm.engine.impl.interceptor.CommandContext;
import com.je.bpm.engine.impl.persistence.entity.CompensateEventSubscriptionEntity;
import com.je.bpm.engine.impl.persistence.entity.EventSubscriptionEntity;
import com.je.bpm.engine.impl.persistence.entity.ExecutionEntity;
import com.je.bpm.engine.impl.util.ProcessDefinitionUtil;
import com.je.bpm.core.model.process.Process;
import java.util.List;

/**
 * 补偿事件处理器
 */
public class CompensationEventHandler implements EventHandler {

    @Override
    public String getEventHandlerType() {
        return CompensateEventSubscriptionEntity.EVENT_TYPE;
    }

    @Override
    public void handleEvent(EventSubscriptionEntity eventSubscription, Object payload, CommandContext commandContext) {
        String configuration = eventSubscription.getConfiguration();
        if (configuration == null) {
            throw new ActivitiException("Compensating execution not set for compensate event subscription with id " + eventSubscription.getId());
        }
        ExecutionEntity compensatingExecution = commandContext.getExecutionEntityManager().findById(configuration);
        String processDefinitionId = compensatingExecution.getProcessDefinitionId();
        Process process = ProcessDefinitionUtil.getProcess(processDefinitionId);
        if (process == null) {
            throw new ActivitiException("Cannot start process instance. Process model (id = " + processDefinitionId + ") could not be found");
        }

        FlowElement flowElement = process.getFlowElement(eventSubscription.getActivityId(), true);
        if (flowElement instanceof SubProcess && !((SubProcess) flowElement).isForCompensation()) {
            // descend into scope:
            compensatingExecution.setScope(true);
            List<CompensateEventSubscriptionEntity> eventsForThisScope = commandContext.getEventSubscriptionEntityManager().findCompensateEventSubscriptionsByExecutionId(compensatingExecution.getId());
            ScopeUtil.throwCompensationEvent(eventsForThisScope, compensatingExecution, false);
        } else {
            try {
                if (commandContext.getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
                    commandContext.getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
                            ActivitiEventBuilder.createActivityEvent(ActivitiEventType.ACTIVITY_COMPENSATE, flowElement.getId(), flowElement.getName(),
                                    compensatingExecution.getId(), compensatingExecution.getProcessInstanceId(), compensatingExecution.getProcessDefinitionId(), flowElement));
                }
                compensatingExecution.setCurrentFlowElement(flowElement);
                Context.getAgenda().planContinueProcessInCompensation(compensatingExecution);
            } catch (Exception e) {
                throw new ActivitiException("Error while handling compensation event " + eventSubscription, e);
            }

        }
    }

}
